In some of the videos from the D:OS campaign Larian said that they used the same engine for both games and considering they are releasing that engine it is possible that a user created mod/add-on could be made to put that feature back in. I for one am excited to get my hands on this game.
That won't work. While they ARE using the same base engine, they're explicitly said that they're using different tools to build the different games and that you can't use the Original Sin editor to make maps for Dragon Commander.
